Federal authorities announced a sweeping takedown of an alleged Mexican Mafia network in Southern California, charging over 40 in an Orange County crime ring.

The deaths of two C.I.A. officers in a crash in northern Mexico sparked questions about authorization and sovereignty, but also reflected a longstanding, sensitive security partnership between the two countries.

Six Americans were among those hurt when a gunman opened fire on tourists visiting a popular archaeological pyramid site in Mexico.

An investigation is underway after four officials, including two Americans, were killed in a car crash in Mexico. It's being called an accident by the local government, but it happened after an operation to destroy drug labs in a mountainous area.